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The Wrist Gauntlet was a small computer device worn, as its name implies, on the wrist, and featured numerous controls for various items of Predator technology, as well as a digitized, apparently numerical display.[3] The Gauntlet was linked directly into a Predator's Bio-Mask and governed many of its functions, including its alternate vision modes. It also operated the user's Cloak and, in some cases, control a Yautja's Plasmacaster as well. The Gauntlet also acted as a power source for these tools, although it had only limited capacity and would become depleted with repeated use.[2][1]However, despite the clearly advanced nature of the technology involved, Wrist Gauntlet could be recharged from any common power source, including junction boxes and standard human-manufactured battery units.[1]

As the control unit for much of a Predator's advanced weaponry and technology, the Wrist Gauntlet was an incredibly important item for them. In fact, a Predator's Wrist Gauntlet was surgically grafted onto the individuals arm and apparently fused with their very nervous system to the point where removal of the unit was typically fatal for its owner.[4] The computer's importance had also been noted by humans studying the creatures, and much effort had been put into the capture and study of the device.[1]

All Yautja Wrist Gauntlets contained a powerful Self-Destruct Device designed to allow the individual to commit honorable suicide rather than be captured. More importantly, the device eradicated all traces of the Predator's existence and ensured their advanced technology would not be captured.

Energy Flechettes were small Plasmacasters included on some Wrist Gauntlets. While lacking the power and versatility of the common Plasmacaster, Energy Flechettes could make effective weapons in the heat of battle.